You have a point - go ahead and extend the use of passive radio for another 100 years if you want. My point remains the same. The chances of our "picking up" a radio transmission (interstellar) in the first 200 years of our discovery might be minuscule. In a offhanded way of addressing the other arguments of Fermi, though it might piss certain people off even more... We are talking about "Why haven't we seen any evidence of intelligent life". Well we can barely even detect planets in other star systems. That's all I have to say about OUR ability to "detect". Why haven't they contacted/left evidence/show their presence to us? Why would they? We have not shown any value to the universe as of yet. We cannot even contemplate why an advanced civilization, capable of interstellar travel (I mean that is pretty frikin far away from where we are right now) WOULD WANT TO even come close to us. Maybe they did, maybe they didn't. Indeed maybe no one even knows about us, maybe there is absolutely no one out there, sure that's possible. But to point to "Fermi" and draw a conclusion...ignorant.